Home / 189,444.48-261,431.64-103,402.60

Finding the Fourth Proportional to 189,444.48, 261,431.64 and 103,402.60

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Solution

The fourth proportional to 189,444.48, 261,431.64 and 103,402.60 is: 142,694.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,444.48 : 261,431.64 = 103,402.60 : x
  2. Step 2: Convert to fraction form
    189,444.48/261,431.64 = 103,402.60/x
  3. Step 3: Cross multiply
    189,444.48x = 261,431.64 × 103,402.60
  4. Step 4: Simplify right side
    189,444.48x = 27,032,711,298.26
  5. Step 5: Solve for x
    x = 27,032,711,298.26/189,444.48
  6. Step 6: Final answer
    x = 142,694.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.